Messages in this thread |  | | From | Jim Mattson <> | Date | Wed, 21 Aug 2019 12:47:35 -0700 | Subject | Re: [PATCH 2/3] KVM: x86: always expose VIRT_SSBD to guests |
| |
On Wed, Aug 21, 2019 at 1:27 AM Paolo Bonzini <pbonzini@redhat.com> wrote: > > Even though it is preferrable to use SPEC_CTRL (represented by > X86_FEATURE_AMD_SSBD) instead of VIRT_SPEC, VIRT_SPEC is always > supported anyway because otherwise it would be impossible to > migrate from old to new CPUs. Make this apparent in the > result of KVM_GET_SUPPORTED_CPUID as well. > > While at it, reuse X86_FEATURE_* constants for the SVM leaf too. > > However, we need to hide the bit on Intel processors, so move > the setting to svm_set_supported_cpuid. > > Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> > Reported-by: Eduardo Habkost <ehabkost@redhat.com> > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jim Mattson <jmattson@google.com>
|  |